Obesity remains a serious health problem and it is no secret that many people want to lose weight. Behavioral economists typically argue that “nudges” help individuals with various decisionmaking flaws to live longer, healthier, and better lives. In an article in the new issue of Regulation, Michael L. Marlow discusses how nudging by government differs from nudging by markets, and explains why market nudging is the more promising avenue for helping citizens to lose weight.

Armed with a computer model in 1935, one could probably have written the exact same story on California drought as appears today in the Washington Post some 80 years ago, prompted by the very similar outlier temperatures of 1934 and 2014.

Two long wars, chronic deficits, the financial crisis, the costly drug war, the growth of executive power under Presidents Bush and Obama, and the revelations about NSA abuses, have given rise to a growing libertarian movement in our country – with a greater focus on individual liberty and less government power. David Boaz’s newly released The Libertarian Mind is a comprehensive guide to the history, philosophy, and growth of the libertarian movement, with incisive analyses of today’s most pressing issues and policies.

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An article published this week by National Review magazine blames the many problems of California on—take a guess—high taxes, over-regulation of business, runaway state spending, an expansive welfare state? Try none of the above. The article, by Alex Alexiev of the Hudson Institute, puts the blame on the backs of low-skilled, illegal immigrants from Mexico and the federal government for not keeping them out.

Titled “Catching Up to Mexico: Illegal immigration is depleting California’s human capital and ravaging its economy,” the article endorses high-skilled immigration to the state while rejecting the influx of “the poorly educated, the unskilled, and the illiterate” immigrants that enter illegally from Mexico and elsewhere in Latin America.

Before swallowing the article’s thesis, consider two thoughts:

One, if low-skilled, illegal immigration is the single greatest cause of California’s woes, how does the author explain the relative success of Texas? As a survey in the July 11 issue of The Economist magazine explained, smaller-government Texas has avoided many of the problems of California while outperforming most of the rest of the country in job creation and economic growth. And Texas has managed to do this with an illegal immigrant population that rivals California’s as a share of its population.

Two, low-skilled immigrants actually enhance the human capital of native-born Americans by allowing us to move up the occupational ladder to jobs that are more productive and better paying. In a new study from the Cato Institute, titled “Restriction or Legalization? Measuring the Economic Benefits of Immigration Reform,” this phenomenon is called the “occupational mix effect” and it translates into tens of billions of dollars of benefits to U.S. households.

Our new study, authored by economists Peter Dixon and Maureen Rimmer, found that legalization of low-skilled immigration would boost the incomes of American households by $180 billion, while further restricting such immigration would reduce the incomes of U.S. families by $80 billion.

That is a quarter of a trillion dollar difference between following the policy advice of National Review and that of the Cato Institute. Last time I checked, that is still real money, even in Washington.